Improvement in boring-machines



NITED STATES ISAAC GORY, OF DALTON, INDIAA.

IMPROVEMENT IN BORING-MACHINES.

Specification forming part of Letters Patent No. 135,693, dated Februaryl1, 1873.

To all whom t may concern:

Be it known that I, IsAAo CoRY, of Dalton, in the county of Vayne andState of Indiana, have invented a new and Improved Boring-Machine7 ofwhich the following is a specification:

Figure 1 is a side elevation, and Fig. 2 an end elevation of my improvedtree-boren Similar letters of reference indicate corresponding parts.

The object of this invention is to produce a boring-machine wherebytrees Whose sap is to be obtained in the manufacture of sugar,turpent-ine, resin, or for other purposes, can be conveniently tapped;and the invention consists in applying a rotary tool or auger to amovable frame, which canbe fed against and toward the tree while theauger is being rapidly revolved by hand or `other means.

In the drawing, the letter A represents the supporting-platform ofthe-frame, held in a horizontal position by means of standards or legs BB, on which said legs the platform may be vertically adjusted andsecured at suitable height by means of set-screws o, keys, or otherdevices. C is a frame supported on the platform A, and laterally movablethereon.

For ordinary purposes I prefer to slightly inoline the frame C, inmanner shown in Fig. 2, by placing it on a Wedge-shaped block, b, thatrest-s on the platform A, or, still better, by rabbeting it betweeninclined rails d that are rigidly seeured to the platform A, and supportthe lower rail e of the frame C, allowing the same to be laterally movedeven beyond the extent of the platform A.

In the frame C arethebearin gs of two shafts,D and E. To one end of theshaftDis attached a gear-wheel ,fnvith inner teeth, and with acrankhandle, g. This wheel f gears into a pinion, 71., that is mountedupon the end ofthe shaft E. The other end ofthe shaftE,whichprojectsfrom the frame C, carries the boring-tool tothe used. G is aleverpivoted to the platform A, and connected with the movable frame C insuch manner that by means of such lever the frame C can be movedbackward and forward.

In operation this borer is placed against the tree, its height regulatedin the required manner, and the handle g then revolved, and at the sametime the tool fed against the tree by means of the lever G, until thetree has been bored to the required extent.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- A portable tree-tapping machine, consistiu g ofplatform A and legs B, adjustable with respeet to each other by screwsa., the inclined frame C movable therein, and provided with boringmechanism I) E j' g lz., and the leverV G, all constructed, arranged,and adapted to be used as set forth.

' ISAAC CORY.

Witnesses:

CHENIAH CovArn, Sr., SOLOMON Conv.

